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Heterocyclic Building Blocks

3724

  • 1-(4-Nitrophenyl)-3-methyl-5-pyrazolone

    Purity:
    ≥ 98% (GC)
    Synonym:
    3-Methyl-1-(4-nitrophenyl)-5-pyrazolone
    Catalog Number:
    43644
    CAS Number:
    6402-09-1
    Purity Limit:
    ≥ 98% (GC)
    MDL NO:
    MFCD00020751
    Molecular Formula:
    C10H9N3O3
    Molecular Weight:
    219.2
    Specification Sheet SDS

  • 1-Ethylpyrazole

    Hazmat
    Purity:
    ≥ 98% (GC)
    Hazmat
    Catalog Number:
    43610
    CAS Number:
    2817-71-2
    Purity Limit:
    ≥ 98% (GC)
    MDL NO:
    MFCD03444367
    Molecular Formula:
    C5H8N2
    Molecular Weight:
    96.13
    Specification Sheet SDS

  • 3-Amino-5-tert-butylpyrazole

    Purity:
    ≥ 98% (GC)
    Catalog Number:
    43643
    CAS Number:
    82560-12-1
    Purity Limit:
    ≥ 98% (GC)
    MDL NO:
    MFCD00067987
    Molecular Formula:
    C7H13N3
    Molecular Weight:
    139.2
    Specification Sheet SDS

  • 4-Methylpyrazole

    Purity:
    ≥ 98% (GC)
    Catalog Number:
    43636
    CAS Number:
    7554-65-6
    Purity Limit:
    ≥ 98% (GC)
    MDL NO:
    MFCD00005245
    Molecular Formula:
    C4H6N2
    Molecular Weight:
    82.11
    Specification Sheet SDS

  • 1-Phenyl-5-pyrazolone-3-carboxylic acid

    Purity:
    ≥ 98% (HPLC)
    Synonym:
    5-Oxo-1-phenyl-2-pyrazolin-3-carboxylic acid
    Catalog Number:
    43634
    CAS Number:
    119-18-6
    Purity Limit:
    ≥ 98% (HPLC)
    MDL NO:
    MFCD00037318
    Molecular Formula:
    C10H8N2O3
    Molecular Weight:
    204.19
    Specification Sheet SDS

  • 5-Amino-1-(p-tolyl)pyrazole-4-carbonitrile

    Purity:
    ≥ 93% (GC)
    Synonym:
    5-Amino-1-(4-methylphenyl)pyrazole-4-carbonitrile
    Catalog Number:
    43608
    CAS Number:
    103646-82-8
    Purity Limit:
    ≥ 93% (GC)
    MDL NO:
    MFCD00052944
    Molecular Formula:
    C11H10N4
    Molecular Weight:
    198.23
    Specification Sheet SDS

  • 4-Bromo-1-isopropylpyrazole

    Purity:
    ≥ 98% (GC)
    Catalog Number:
    43639
    CAS Number:
    313735-62-5
    Purity Limit:
    ≥ 98% (GC)
    MDL NO:
    MFCD09801021
    Molecular Formula:
    C6H9BrN2
    Molecular Weight:
    189.06
    Specification Sheet SDS

  • Potassium tris(3,5-dimethylpyrazol-1-yl)borohydride

    Hazmat
    Purity:
    ≥ 98% (Assay by titration)
    Synonym:
    Potassium hydrotris(3,5-dimethylpyrazol-1-yl)borate
    Hazmat
    Catalog Number:
    43623
    CAS Number:
    17567-17-8
    Purity Limit:
    ≥ 98% (Assay by titration)
    MDL NO:
    MFCD00040342
    Molecular Formula:
    C15H22BKN6
    Molecular Weight:
    336.29
    Specification Sheet SDS

  • 4-Formylaminoantipyrine

    Purity:
    ≥ 98% (GC)
    Synonym:
    N-(1,5-Dimethyl-3-oxo-2-phenyl-2,3-dihydro-1H-pyrazol-4-yl)formamide
    Catalog Number:
    43614
    CAS Number:
    1672-58-8
    Purity Limit:
    ≥ 98% (GC)
    MDL NO:
    MFCD00085457
    Molecular Formula:
    C12H13N3O2
    Molecular Weight:
    231.26
    Specification Sheet SDS

  • 1-Phenylpyrazole

    Purity:
    ≥ 98% (GC)
    Catalog Number:
    43609
    CAS Number:
    1126-00-7
    Purity Limit:
    ≥ 98% (GC)
    MDL NO:
    MFCD00003112
    Molecular Formula:
    C9H8N2
    Molecular Weight:
    144.18
    Specification Sheet SDS

  • 3-Methyl-1-(4-sulfophenyl)-2-pyrazolin-5-one

    Purity:
    ≥ 97% (Assay by titration)
    Synonym:
    1-(4'-Sulfophenyl)-3-methyl-5-pyrazolone
    Catalog Number:
    43631
    CAS Number:
    89-36-1
    Purity Limit:
    ≥ 97% (Assay by titration)
    MDL NO:
    MFCD00020756
    Molecular Formula:
    C10H10N2O4S
    Molecular Weight:
    254.26
    Specification Sheet SDS

  • Pyrazole-3-carboxylic acid

    Purity:
    ≥ 98% (HPLC)
    Catalog Number:
    43616
    CAS Number:
    1621-91-6
    Purity Limit:
    ≥ 98% (HPLC)
    MDL NO:
    MFCD00077436
    Molecular Formula:
    C4H4N2O2
    Molecular Weight:
    112.09
    Specification Sheet SDS

  • 1,3,5-Trimethylpyrazole

    Hazmat
    Purity:
    ≥ 98% (GC)
    Hazmat
    Catalog Number:
    43629
    CAS Number:
    1072-91-9
    Purity Limit:
    ≥ 98% (GC)
    MDL NO:
    MFCD00015536
    Molecular Formula:
    C6H10N2
    Molecular Weight:
    110.16
    Specification Sheet SDS

  • 1-Phenyl-3-pyrazolidone

    Hazmat
    Purity:
    ≥ 98% (Assay by titration)
    Synonym:
    Phenidone
    Hazmat
    Catalog Number:
    43628
    CAS Number:
    92-43-3
    Purity Limit:
    ≥ 98% (Assay by titration)
    MDL NO:
    MFCD00003094
    Molecular Formula:
    C9H10N2O
    Molecular Weight:
    162.19
    Specification Sheet SDS

  • 3-Methyl-4-nitropyrazole

    Purity:
    ≥ 98% (GC)
    Catalog Number:
    43626
    CAS Number:
    5334-39-4
    Purity Limit:
    ≥ 98% (GC)
    MDL NO:
    MFCD00037864
    Molecular Formula:
    C4H5N3O2
    Molecular Weight:
    127.1
    Specification Sheet SDS

  • Pyrazole-4-carboxylic acid

    Purity:
    ≥ 98% (Assay by titration)
    Catalog Number:
    43635
    CAS Number:
    37718-11-9
    Purity Limit:
    ≥ 98% (Assay by titration)
    MDL NO:
    MFCD00077436
    Molecular Formula:
    C4H4N2O2
    Molecular Weight:
    112.09
    Specification Sheet SDS

  • 3-Methylpyrazole

    Hazmat
    Purity:
    ≥ 97% (GC)
    Synonym:
    3-Methyl-1,2-diazole
    Hazmat
    Catalog Number:
    43633
    CAS Number:
    1453-58-3
    Purity Limit:
    ≥ 97% (GC)
    MDL NO:
    MFCD00005240
    Molecular Formula:
    C4H6N2
    Molecular Weight:
    82.11
    Specification Sheet SDS

  • 1,3-Dimethyl-5-pyrazolone

    Purity:
    ≥ 98% (HPLC)
    Synonym:
    2,4-Dihydro-2,5-dimethyl-3H-pyrazol-3-one
    Catalog Number:
    43622
    CAS Number:
    2749-59-9
    Purity Limit:
    ≥ 98% (HPLC)
    MDL NO:
    MFCD00067008
    Molecular Formula:
    C5H8N2O
    Molecular Weight:
    112.13
    Specification Sheet SDS

  • 1-Isopropylpyrazole

    Hazmat
    Purity:
    ≥ 98% (GC)
    Hazmat
    Catalog Number:
    43618
    CAS Number:
    18952-87-9
    Purity Limit:
    ≥ 98% (GC)
    MDL NO:
    MFCD07468920
    Molecular Formula:
    C6H10N2
    Molecular Weight:
    110.16
    Specification Sheet SDS

  • 1,5-Dimethylpyrazole

    Hazmat
    Purity:
    ≥ 98% (Assay by titration)
    Hazmat
    Catalog Number:
    43613
    CAS Number:
    694-31-5
    Purity Limit:
    ≥ 98% (Assay by titration)
    MDL NO:
    MFCD01646129
    Molecular Formula:
    C5H8N2
    Molecular Weight:
    96.13
    Specification Sheet SDS

  • 5-Amino-3-(4-methoxyphenyl)-1-phenylpyrazole

    Purity:
    ≥ 98% (HPLC)
    Catalog Number:
    43625
    CAS Number:
    19652-13-2
    Purity Limit:
    ≥ 98% (HPLC)
    MDL NO:
    MFCD00197061
    Molecular Formula:
    C16H15N3O
    Molecular Weight:
    265.32
    Specification Sheet SDS

  • 1-Methylpyrazole-5-methanol

    Purity:
    ≥ 98% (GC)
    Synonym:
    5-(Hydroxymethyl)-1-methylpyrazole
    Catalog Number:
    43621
    CAS Number:
    84547-61-5
    Purity Limit:
    ≥ 98% (GC)
    MDL NO:
    MFCD08556301
    Molecular Formula:
    C5H8N2O
    Molecular Weight:
    112.13
    Specification Sheet SDS

  • 2-(1H-Pyrazol-5-yl)aniline

    Purity:
    ≥ 97% (GC)
    Synonym:
    5-(2-Aminophenyl)pyrazole
    Catalog Number:
    43627
    CAS Number:
    111562-32-4
    Purity Limit:
    ≥ 97% (GC)
    MDL NO:
    MFCD09028476
    Molecular Formula:
    C9H9N3
    Molecular Weight:
    159.19
    Specification Sheet SDS

  • 1,3-Dimethylpyrazole

    Hazmat
    Purity:
    ≥ 98% (GC)
    Hazmat
    Catalog Number:
    43620
    CAS Number:
    694-48-4
    Purity Limit:
    ≥ 98% (GC)
    MDL NO:
    MFCD00036665
    Molecular Formula:
    C5H8N2
    Molecular Weight:
    96.13
    Specification Sheet SDS

  • 1-Methyl-4-nitro-3-propylpyrazole-5-carboxamide

    Purity:
    ≥ 96% (GC)
    Synonym:
    5-Carbamoyl-1-methyl-4-nitro-3-propylpyrazole
    Catalog Number:
    43619
    CAS Number:
    139756-01-7
    Purity Limit:
    ≥ 96% (GC)
    MDL NO:
    MFCD02253196
    Molecular Formula:
    C8H12N4O3
    Molecular Weight:
    212.21
    Specification Sheet SDS

  • 4-Amino-1-methyl-3-propylpyrazole-5-carboxamide

    Purity:
    ≥ 98% (HPLC)
    Catalog Number:
    43606
    CAS Number:
    139756-02-8
    Purity Limit:
    ≥ 98% (HPLC)
    MDL NO:
    MFCD02927682
    Molecular Formula:
    C8H14N4O
    Molecular Weight:
    182.23
    Specification Sheet SDS

  • 5-Amino-1-methylpyrazole

    Purity:
    ≥ 98% (GC)
    Synonym:
    1-methyl-1H-pyrazol-5-amine
    Catalog Number:
    43624
    CAS Number:
    1192-21-8
    Purity Limit:
    ≥ 98% (GC)
    MDL NO:
    MFCD00068156
    Molecular Formula:
    C4H7N3
    Molecular Weight:
    97.12
    Specification Sheet SDS

  • 5-Formamido-1-[2-(formyloxy)ethyl]pyrazole

    Purity:
    ≥ 97% (GC)
    Catalog Number:
    43617
    CAS Number:
    116856-18-9
    Purity Limit:
    ≥ 97% (GC)
    MDL NO:
    MFCD09744040
    Molecular Formula:
    C7H9N3O3
    Molecular Weight:
    183.17
    Specification Sheet SDS

  • 3-Amino-5-phenylpyrazole

    Purity:
    ≥ 98% (GC)
    Catalog Number:
    43599
    CAS Number:
    1572-10-7
    Purity Limit:
    ≥ 98% (GC)
    MDL NO:
    MFCD00191749
    Molecular Formula:
    C9H9N3
    Molecular Weight:
    159.19
    Specification Sheet SDS

  • 3,5-Dimethyl-1-hydroxymethylpyrazole

    Purity:
    ≥ 98% (Assay by titration)
    Synonym:
    1-Hydroxymethyl-3,5-dimethylpyrazole
    Catalog Number:
    43615
    CAS Number:
    85264-33-1
    Purity Limit:
    ≥ 98% (Assay by titration)
    MDL NO:
    MFCD00020738
    Molecular Formula:
    C6H10N2O
    Molecular Weight:
    126.16
    Specification Sheet SDS

  • 1-(Tetrahydro-2H-pyran-2-yl)-1H-pyrazole

    Purity:
    ≥ 98% (GC)
    Catalog Number:
    43612
    CAS Number:
    449758-17-2
    Purity Limit:
    ≥ 98% (GC)
    MDL NO:
    MFCD11044692
    Molecular Formula:
    C8H12N2O
    Molecular Weight:
    152.2
    Specification Sheet SDS

  • 3-Amino-1-methylpyrazole

    Purity:
    ≥ 98% (GC)
    Catalog Number:
    43604
    CAS Number:
    1904-31-0
    Purity Limit:
    ≥ 98% (GC)
    MDL NO:
    MFCD00466340
    Molecular Formula:
    C4H7N3
    Molecular Weight:
    97.12
    Specification Sheet SDS

  • Diethyl pyrazole-3,5-dicarboxylate

    Purity:
    ≥ 98% (GC)
    Synonym:
    Pyrazole-3,5-dicarboxylic acid diethyl ester
    Catalog Number:
    43611
    CAS Number:
    37687-24-4
    Purity Limit:
    ≥ 98% (GC)
    MDL NO:
    MFCD00152167
    Molecular Formula:
    C9H12N2O4
    Molecular Weight:
    212.21
    Specification Sheet SDS

  • 3-Amino-5-hydroxypyrazole

    Purity:
    ≥ 98% (HPLC)
    Synonym:
    5-Amino-2,4-dihydro-3H-pyrazol-3-one
    Catalog Number:
    43607
    CAS Number:
    6126-22-3
    Purity Limit:
    ≥ 98% (HPLC)
    MDL NO:
    MFCD00022384
    Molecular Formula:
    C3H5N3O
    Molecular Weight:
    99.09
    Specification Sheet SDS

  • 5-Amino-1-(2-hydroxyethyl)pyrazole

    Purity:
    ≥ 99% (GC)
    Catalog Number:
    43605
    CAS Number:
    73616-27-0
    Purity Limit:
    ≥ 99% (GC)
    MDL NO:
    MFCD08063809
    Molecular Formula:
    C5H9N3O
    Molecular Weight:
    127.15
    Specification Sheet SDS

  • 4,4'-Diantipyrylmethane monohydrate [for Ti Analysis]

    Purity:
    98 - 102% (Assay by titration)
    Synonym:
    4,4'-methylenediantipyrine monohydrate
    Catalog Number:
    43603
    CAS Number:
    1251-85-0
    Purity Limit:
    98 - 102% (Assay by titration)
    MDL NO:
    MFCD00149122
    Molecular Formula:
    C23H24N4O2·H2O
    Molecular Weight:
    406.49
    Specification Sheet SDS

  • 4-(1-Pyrazolyl)benzonitrile

    Purity:
    ≥ 98% (GC)
    Synonym:
    1-(4-Cyanophenyl)pyrazole
    Catalog Number:
    43601
    CAS Number:
    25699-83-6
    Purity Limit:
    ≥ 98% (GC)
    MDL NO:
    MFCD09033533
    Molecular Formula:
    C10H7N3
    Molecular Weight:
    169.19
    Specification Sheet SDS

  • 5-Amino-1-phenylpyrazole

    Purity:
    ≥ 98% (GC)
    Catalog Number:
    43593
    CAS Number:
    826-85-7
    Purity Limit:
    ≥ 98% (GC)
    MDL NO:
    MFCD00020734
    Molecular Formula:
    C9H9N3
    Molecular Weight:
    159.19
    Specification Sheet SDS

  • 5-Pyrazolone

    Purity:
    ≥ 98% (GC)
    Synonym:
    2,4-Dihydro-3H-pyrazol-3-one
    Catalog Number:
    43594
    CAS Number:
    137-44-0
    Purity Limit:
    ≥ 98% (GC)
    MDL NO:
    MFCD00127223
    Molecular Formula:
    C3H4N2O
    Molecular Weight:
    84.08
    Specification Sheet SDS

  • Ethyl 5-amino-1-methylpyrazole-4-carboxylate

    Purity:
    ≥ 98% (GC)
    Synonym:
    5-Amino-1-methylpyrazole-4-carboxylic acid ethyl ester
    Catalog Number:
    43598
    CAS Number:
    31037-02-2
    Purity Limit:
    ≥ 98% (GC)
    MDL NO:
    MFCD00051652
    Molecular Formula:
    C7H11N3O2
    Molecular Weight:
    169.18
    Specification Sheet SDS

  • 2-Isobutyl-3-methylpyrazine

    Purity:
    ≥ 98% (GC)
    Synonym:
    2-Methyl-3-isobutylpyrazine
    Catalog Number:
    43566
    CAS Number:
    13925-06-9
    Purity Limit:
    ≥ 98% (GC)
    MDL NO:
    MFCD00059770
    Molecular Formula:
    C9H14N2
    Molecular Weight:
    150.23
    Specification Sheet SDS

  • 4-Isopropylantipyrine

    Purity:
    ≥ 98% (GC)
    Synonym:
    4-Isopropyl-2,3-dimethyl-1-phenyl-5-pyrazolone
    Catalog Number:
    43591
    CAS Number:
    479-92-5
    Purity Limit:
    ≥ 98% (GC)
    MDL NO:
    MFCD00053368
    Molecular Formula:
    C14H18N2O
    Molecular Weight:
    230.31
    Specification Sheet SDS

  • Ethyl pyrazole-3-carboxylate

    Purity:
    ≥ 98% (GC)
    Synonym:
    Pyrazole-3-carboxylic acid ethyl ester
    Catalog Number:
    43600
    CAS Number:
    5932-27-4
    Purity Limit:
    ≥ 98% (GC)
    MDL NO:
    MFCD00159643
    Molecular Formula:
    C6H8N2O2
    Molecular Weight:
    140.14
    Specification Sheet SDS

  • 2-Ethoxy-3-ethylpyrazine

    Purity:
    ≥ 98% (GC)
    Catalog Number:
    43582
    CAS Number:
    35243-43-7
    Purity Limit:
    ≥ 98% (GC)
    MDL NO:
    MFCD00038026
    Molecular Formula:
    C8H12N2O
    Molecular Weight:
    152.2
    Specification Sheet SDS

  • 2,3-Diethyl-5-methylpyrazine

    Hazmat
    Purity:
    ≥ 97% (GC)
    Hazmat
    Catalog Number:
    43589
    CAS Number:
    18138-04-0
    Purity Limit:
    ≥ 97% (GC)
    MDL NO:
    MFCD00009635
    Molecular Formula:
    C9H14N2
    Molecular Weight:
    150.23
    Specification Sheet SDS

  • 2-(1H-Pyrazol-3-yl)pyridine

    Purity:
    ≥ 98% (GC)
    Synonym:
    3-(2-Pyridyl)pyrazol
    Catalog Number:
    43602
    CAS Number:
    75415-03-1
    Purity Limit:
    ≥ 98% (GC)
    MDL NO:
    MFCD00115151
    Molecular Formula:
    C8H7N3
    Molecular Weight:
    145.17
    Specification Sheet SDS

  • 3-Amino-5-methylpyrazole

    Purity:
    ≥ 96% (GC)
    Catalog Number:
    43592
    CAS Number:
    31230-17-8
    Purity Limit:
    ≥ 96% (GC)
    MDL NO:
    MFCD00075180
    Molecular Formula:
    C4H7N3
    Molecular Weight:
    97.12
    Specification Sheet SDS

  • 2-Methyl-3-isopropoxypyrazine

    Purity:
    ≥ 97% (GC)
    Synonym:
    2-Isopropoxy-3-methylpyrazine
    Catalog Number:
    43559
    CAS Number:
    94089-22-2
    Purity Limit:
    ≥ 97% (GC)
    MDL NO:
    MFCD00059772
    Molecular Formula:
    C8H12N2O
    Molecular Weight:
    152.2
    Specification Sheet SDS

  • 3-Methyl-1-phenylpyrazole

    Purity:
    ≥ 98% (GC)
    Catalog Number:
    43595
    CAS Number:
    1128-54-7
    Purity Limit:
    ≥ 98% (GC)
    MDL NO:
    MFCD00003123
    Molecular Formula:
    C10H10N2
    Molecular Weight:
    158.2
    Specification Sheet SDS

  • 2-Methyl-3-(methylthio)pyrazine

    Purity:
    ≥ 99% (GC)
    Synonym:
    2-Methylmercapto-3-methylpyrazine
    Catalog Number:
    43588
    CAS Number:
    2882-20-4
    Purity Limit:
    ≥ 99% (GC)
    MDL NO:
    MFCD00014610
    Molecular Formula:
    C6H8N2S
    Molecular Weight:
    140.2
    Specification Sheet SDS
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